1. The problem statement, all variables and given/known data A stone is fired from a slingshot at an angle of 65° from the horizontal. The stone strikes the ground 8.0s later at an altitude 30m lower than the height at which it was released. At what initial velocity was the stone released? 2. Relevant equations dy = viyt + 1/2gt2 Viy = Vi sin θ 3. The attempt at a solution dy = viyt + 1/2gt2 dy = Vi sin θt + 1/2gt2 dy + 30m = Vi sin (65)(8.0s) + 1/2(+9.91m/s2)(8.0s)2 dy =7.25 Vi + 283.92 m I'm stuck after this stage. Currently I don't see a clear solution. How could I approach the problem?